Home / 1,213,657.20-1,820,485.80-315,091.80

Finding the Fourth Proportional to 1,213,657.20, 1,820,485.80 and 315,091.80

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Solution

The fourth proportional to 1,213,657.20, 1,820,485.80 and 315,091.80 is: 472,637.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213,657.20 : 1,820,485.80 = 315,091.80 : x
  2. Step 2: Convert to fraction form
    1,213,657.20/1,820,485.80 = 315,091.80/x
  3. Step 3: Cross multiply
    1,213,657.20x = 1,820,485.80 × 315,091.80
  4. Step 4: Simplify right side
    1,213,657.20x = 573,620,147,596.44
  5. Step 5: Solve for x
    x = 573,620,147,596.44/1,213,657.20
  6. Step 6: Final answer
    x = 472,637.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.